See also:

• Regional: North America: United States: Regions: West: Science and Environment: Plant Life  (0)
• Regional: North America: United States: Science and Environment: Plant Life  (5)

CalFlora - Database containing summary geographic and ecological distribution information for over 8000 California vascular plant taxa, as well as additional habitat information for rare species of the Sierra Nevada..

California Botanical Society - Systematics, ecology, evolution, and natural history of the plants of California and adjacent western North America. Publisher of the journal Madroño..

California Exotic Pest Plant Council - Dedicated to finding solutions to problems caused by non-native pest plant invasions of the state's natural areas..

California Forest Pest Council (CFPC) - Educational resources about forest pests and forest health, and advises the California Board of Forestry and Fire Protection on forest health protection. Committees, reports, meetings, and events..

California Native Plant Society - Non-profit organization dedicated to the preservation of California native plants through scientific activities, education, and conservation..

California Urban Forests Council - Vigorously advocates for a holistic, ecosystem approach to the practice of urban forestry, especially when influencing public policy and decision makers. Offers a newsletter, forest professional certification, publications, and general informational materials..

California Wildflowers - Look-up photos and descriptions of California wildflowers by color, common name, Latin name or family..

Las Pilitas - Advice and resources on gardening with native plants in California..

Sudden Oak Death - Created by the University of California's Sudden Oak Death Research Team, this site addresses the increasing number of oak trees in California that are dying from the fungal disease Phytophthora, and the effects the infestation is having on forest ecology..

The Watershed Nursery - Provides plants native to the San Francisco Bay/Delta watershed, for habitat restoration projects. Contract growing and collection of site-specific gene-stock, also available..